79 L82 vacuum testing
Thread Starter
3rd Gear
Joined: Jun 2015
Posts: 3
Likes: 0
79 L82 vacuum testing
Looking for someone to explain what's going on at vacuum selector switch. Mine has five hook ups in back of it. Plug is missing. I have black,green,white, and blue. Vacuum comes in on black. If you select air condition should there be vacuum on which hose and runs to where. And same for heat and defrost. I'm having trouble getting center vent to work. Heat and defrost not a problem. Thanks
Race Director
Joined: May 2006
Posts: 18,729
Likes: 2,579
this diagram from Willcox has the vacuum line routing
http://repairs.willcoxcorvette.com/w...-schematic.pdf
http://repairs.willcoxcorvette.com/w...-schematic.pdf
Melting Slicks
Joined: Oct 2006
Posts: 2,417
Likes: 336
From: Texas
